2007-03-13 10:45:17 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Zoology
Yes they do, but the hearts of invertebrates don't look much like our own heart.
The flow of fluid (hemolymph) through their body is powered by a more or less tubular vessel that contracts rhythmically. Their circulatory system is open and operates at low pressure/low speed, thus they don't need a pump as powerful as the one present in animals with closed circulatory systems.
Here's more (with illustrations):
http://www.emc.maricopa.edu/faculty/farabee/biobk/BioBookcircSYS.html
2007-03-13 10:57:45 · answer #1 · answered by Calimecita 7 · 63⤊ 9⤋
Do Slugs Have Brains
2016-11-16 17:10:45 · answer #2 · answered by goolsbee 4 · 0⤊ 0⤋
insect have heart, well it does not look or behave exactly like the typical "heart'. Insects have a dorsal vessel with which haemolymph can flow. This "heart' runs from the brain all the way to the abdomen. The length of this heart is lined with tiny valves called ostia which ensures one way flow of haemolymph from the hind end to the ganglia (brain).
2007-03-13 10:53:41 · answer #3 · answered by Anonymous · 28⤊ 4⤋
what are harts?? or do you mean hearts??? well if you are talking about hearts everything have hearts but plants!! duha!
bye
2007-03-13 10:54:56 · answer #4 · answered by Anonymous · 5⤊ 42⤋
what do you mean 'harts',- maybe hearts... of course, every animal do have hearts, i think... if not, nothing is gonna pump their blood...
2007-03-13 10:53:50 · answer #5 · answered by Juan C 6 · 7⤊ 35⤋